Molding apparatus.



J. T. WISNER.

MOLDING APPARATUS.

APPLICATIO-N FILED 1ULY27,I9|4 RENEWED OCT. l2. i917.

Patented May 28, 1918.

JAMES T. wis-NER, 0F NnWfY-oRKgN. Y.

MOIDING APPARATUS.

Specification of Letters Patent.

f Bateria-edMay 28, 1918; Y

Application mea July 27, 1914, seriai No. s'ssaesi 'Rw'd october 12,1917. serial No. 196,347.

To all 'whom t may concern Be it known that I. JAMES T. WIsNnn, acitizen of the United States, residing at New York, in the county of NewYork and State of New York, have invented certain new and usefulImprovements in Molding Apparatus, of which the following is aspecification.

This invention relates to apparatus for forming hollow articles, such asflower pots, tubs, and the like, of such materials as con crete, forinstance.

The object of the invention is to provide an apparatus for the purposedescribed by the use of which such articles may be molded or formed withgreat rapidity, and which is characterized by extreme simplicity ofconstruction and operation.

Other objects and aims of the invention, more or less broad than thosestated above, will be in part obvious and in part specifically referredto in the course of the following description of the elements,combinations, arrangements of parts, and applications of principlesconstituting the invention; and the scope of protection contemplatedwill appear from the claims.

In the accompanying drawings, which are to be taken as a part of thisspecication, and in which I have shown a merely preferred form ofembodiment of the invention, Figure 1 is a view in central verticalsection, with parts broken away, illustrating the invention, and showingin dotted lines the alternative positions of certain of the parts; Fig.2 is a sectional view of Fig. 1 trans versely therethrough; Fig. 3 is anelevation of a four-part eXpansible and contractible shell, which may beemployed in connection with the invention, and Fig. 4 is a plan view ofthe same.

Referring to the numerals on the drawings, there is shown at 5 astationary support or platform, upon which rests what may be termed afiller block 6, which is preferably solid and of any desired materialappropriate for the purpose for which it is to be used. Surrounding theplatform 5 there is a vertically movable platform 7, which is raised andlowered by means indicated by the rods 8. The vertically movableplatform 7 is intended to support a shell 9, the outwardly turned flange10 of the shell resting upon the platform, as shown, and the fillerblock, which is supported by the platform 5, being adapted to lill upthe interior of the shell and support the same. In use the block 6remains constantly in position upon the platform 5. A shell 9 is placedover the block, as indicated in Fig. l, and with its edges resting upona movable platform 7, which latter is in the full line position ofFig. 1. The concrete or other plastic material is now molded into shapeupon the outside of the shell 9, the filler block effecting thenecessary support for the hollow shell while this operation is going onand preventing any distortion of the relatively thin metal shell. Whenthe shaping operation is completed, the mechanism for elevating theplatform 7 is set into operation and the platform 7, carrying with itthe shell 9 and the formed article 11, assumes the position shown indotted lines in Fig. 1, whence it may be taken to some other point andleft to dry, while the platform 7 resumes the full line position shownin Fig. 1, ready for another shell and another molding operation.

In order that the shell may be rendered adaptable for the making ofarticles of considerable range of size and proportions, I prefer to makeit of sections 14, 15, 16 and 17, as indicated in Figs. 3 and 4. Thesections 14 and 15 slide longitudinally upon each other, as do also thesections 16 and 17, while the sections 14 and 16 have also a transversesliding movement, as have also the sections 15 and 17. The result isthat the shell is expansible and contractible in both directions.

`Inasmuch as many changes could be made in the above construction, andmany apparently widely different embodiments of my invention could bemade without departing from the scope thereof, it is intended that allmatter contained in the above description or shown in *the accompanyingdrawings sha-ll be interpreted as illustrative and not in a limitingsense.

It is also to be understood that the language used in the followingclaim is intended to cover all the generic and specific features of theinvention herein described form, a shell Covering the filler block andand all statements of the scope of the invenhaving its edges restingupon the vertically tion Which, as a matter of language, might movableplatform.

be said to fall therebetween. In testimony whereof I aix my signature 5I claim: in presence of tWo Witnesses.

In a device of the kind described, a rela- JAMES T. WISNER. tivelystationary platform7 a filler block ear.- Witnesses: ried thereby, arelatively vertically movable HELEN V. FITZPATRICK, platform surroundingthe stationary plat- MARY H. LEWIS.

C opiel et this pntentmy be obtained for ve eentl each, by addressingthe Commissioner of Patents.

. Washington, D. C."

